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A versatile pack for any alpine endeavor.

Mammut's Trion Guide 45 + 7 Backpack caters to the four-season climber who isn't easily dissuaded from alpine activities once winter blows in. When the summer months lead you to high elevation granite routes, the Trio Guide will carry everything you need for the ascent with a rope fixing strap under the lid, daisy chain gear haulers, and gear loops at the removable hip belt. The hip belt allows you comfortably wear a harness with the pack still on. Once winter makes you switch out your approach shoes for a pair of ski boots, the Trion Guide will remain on your gear list with a grip of ski-friendly features like the side ski carry straps, two secure ice axe loops, and a large main compartment with both top and side access points for when you need to access avy gear quickly.

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Sturdy and Slim

In addition to being a solid alpine pack, the Trion Guide 45+7 is an awesome cragging pack. The side zipper is crucial, and the roll top allows you to really stuff your pack full if needed.

One note - like one of the other reviewers, I'm about 5'7", 143lbs, 29-30" waist, and the padded waist strap just baaaarely fits. I had to cut off the elastic strap keepers to allow the belt to cinch down far enough. Hopefully Mammut changes this in future editions.

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great backpack

Familiarity: I've used it once or twice and have initial impressions

i climb with the trion guide 45 +7 and it was confortable, i don't like the waist belt of this back pack, its too large, a'm 5,8" and 140 lbs and i don't feel it fit on my waist; otherwise, great product, nice space in, comfortable shoulder straps, amazing construction

Answer Kai N.'s Question

You are correct in thinking this is more suited to mountaineering and alpine climbing. This bag could certainly work, but many crag-specific packs are much tougher to stand up to that type of daily abuse. The most durable fabric on this pack is 600Denier on the base, where something like this Black Diamond pack has 1200Denier all-around - http://www.backcountry.com/black-diamond-creek-50